A method, system, and medium for adjusting the height of a coating blade in a coating apparatus.

Abstract

This invention discloses a method, system, and medium for adjusting the height of a coating blade in a coating apparatus. The method for adjusting the height of the coating blade involves compensating for the initial height values ​​of both ends of a slide assembly relative to the coating roller, and adjusting the height of both ends of the slide assembly based on the compensated height values. This solves the technical problem of over-adjustment at one end or under-adjustment at the other end. While leveling, the height of the slide assembly can also be adjusted. Compared to setting a separate height adjustment device to adjust the height of the slide assembly, the device structure used in this invention for adjusting the height of the coating blade is simpler and the adjustment efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of food and pharmaceutical packaging machinery and equipment technology, specifically to a method, system, and medium for adjusting the height of a coating blade in a coating device. Background Technology

[0002] A coating machine is a piece of equipment used for coating processes on substrates such as films and paper. The thickness of the finished drug film is crucial to efficacy, cost, and economic benefits. The thickness of a dry drug film ranges from 40-500 μm, requiring an error of ±3 μm, while the corresponding thickness control precision for a wet drug film is within 3 μm, requiring extremely high positioning accuracy. Previously, AC / DC servo motors were used as the actuators for doctor blade height positioning, which suffered from low positioning accuracy, loss of position when power is off, and high cost.

[0003] Chinese patent document CN221335053U discloses a coating head leveling device for leveling the coating head between the coating machine and the sample. The coating machine includes the coating head leveling device and a coating platform, which is located at the bottom of the coating machine and used to hold the material to be coated. The coating head leveling device includes a frame, a fixing component, a coating head, a sensor assembly, and an adjustment assembly. The fixing frame includes a connecting plate and a fixed plate connected to each other. The connecting plate can rotate relative to the fixed plate along a preset axis. The fixed plate is connected to the frame and can move relative to the frame in a first direction. The coating head is connected to the connecting plate; therefore, the fixed plate can drive the coating head to move relative to the frame in the first direction. The sensor assembly includes two displacement sensors, which are spaced apart at both ends of the connecting plate along a second direction. The two displacement sensors are used to detect the distance between the two ends of the connecting plate along the second direction and a preset position. The first direction and the second direction form an angle. The adjustment assembly is connected to the frame and is used to adjust the rotation of the connecting plate along the preset axis.

[0004] In the above technical solution, the leveling device adjustment component adjusts the coating head manually. The adjustment accuracy is easily affected by human interference, making it difficult to achieve synchronous automatic overall height adjustment of both ends of the scraper at the micron level. Summary of the Invention

[0005] To address the problems existing in the use of the prior art, this invention provides a method for adjusting the height of the coating blade in a coating device that has a simpler structure and higher adjustment efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A method for adjusting the height of a coating blade in a coating apparatus includes the following steps:

[0008] S1. Obtain the initial height values ​​at both ends of the slide assembly. x A、x B ;

[0009] S2, Based on the target height value x and initial height value x A 、x B Determine the initial motion stroke values ​​a and b of the drive components at both ends of the slide assembly;

[0010] S3, Based on the initial height value x A 、x B Determine the travel compensation values ​​a1 and b1 of the drive components at both ends of the slide assembly;

[0011] S4. The stroke compensation values ​​a1 and b1 are respectively compensated to the corresponding initial motion stroke values ​​a and b to obtain the final motion stroke values ​​A and B of the drive components at both ends of the slide assembly;

[0012] S5. Turn the drive components on and off according to the final motion stroke values ​​A and B to adjust the height of both ends of the slide assembly.

[0013] As a further improvement to the above technical solution:

[0014] In some embodiments of the present invention, in step S2, the target height value is... x Compared with the initial height value x A 、x B Subtracting the two values, we obtain the initial motion stroke values ​​a and b at both ends of the slide assembly.

[0015] In some embodiments of the present invention, the determination steps for travel compensation values ​​a1 and b1 in step S3 are as follows: [Judgment / Determination] x A 、x B Size, when x A 、x B When they are equal, determine the travel compensation values ​​a1 and b1 according to formula (Ⅰ). x A > x B When, the travel compensation values ​​a1 and b1 are determined according to formulas (II) and (III), when x A < x B At that time, the travel compensation values ​​a1 and b1 are determined according to formulas (Ⅳ) and (Ⅴ);

[0016]

[0017] α and β are the pulse compensation coefficients of the drive components at both ends of the slide assembly, respectively.

[0018] In some embodiments of the present invention, 0.1≤α≤0.3 and 0.1≤β≤0.3 are satisfied.

[0019] In some embodiments of the present invention, in step S4, compensating the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively means adding the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively.

[0020] In some embodiments of the present invention, in step S6, the final motion stroke values ​​A and B are converted into motor pulse commands with a fixed period, the driving component is a stepper motor, and the driving component is turned on and off according to the motor pulse commands.

[0021] In some embodiments of the present invention, the following steps are included before step S1:

[0022] A1. Obtain the thickness values ​​at both ends of the coated film;

[0023] A2. Determine whether the thickness values ​​at both ends of the coated film are equal. If they are, proceed to step A3; otherwise, proceed to step S1.

[0024] A3. Determine whether the thickness values ​​at both ends of the coated film are equal to the theoretical thickness value. If yes, continue coating; otherwise, proceed to step S1.

[0025] As a general inventive concept, the present invention also provides a coating blade height adjustment control system for a coating apparatus, including a microprocessor and a memory interconnected thereto, the microprocessor being programmed or configured to execute the aforementioned coating blade height adjustment method for the coating apparatus.

[0026] As a general inventive concept, the present invention also provides a computer-readable storage medium storing a computer program or instructions that are programmed or configured to execute the aforementioned coating blade height adjustment method of the coating apparatus via a processor.

[0027] As a general inventive concept, the present invention also provides a computer program product, including a computer program or instructions, which are programmed or configured to execute the aforementioned coating blade height adjustment method of the coating apparatus via a processor.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The present invention discloses a method for adjusting the height of a coating blade in a coating apparatus. By compensating for the initial height values ​​at both ends of a slide assembly, the height of both ends of the slide assembly is adjusted according to the compensated height values. This solves the technical problem of over-adjustment at one end or under-adjustment at the other end. While leveling, the height of the slide assembly can also be adjusted. Compared with setting a separate height adjustment device to adjust the height of the slide assembly, the device structure used in the coating blade height adjustment method of the present invention is simpler and the adjustment efficiency is higher. Attached Figure Description

[0030] Figure 1 This is a process flow diagram of the coating blade height adjustment method of the coating device of the present invention.

[0031] Figure 2 This is a schematic diagram of the coating device of the present invention.

[0032] Figure 3 This is a front view of the coating apparatus of the present invention (with some parts removed).

[0033] Figure 4 This is a side view of the coating apparatus of the present invention (with some parts removed).

[0034] Figure 5 This is a configuration diagram of the system of the present invention.

[0035] Legend: 1. Frame; 2. Slide assembly; 3. Drive assembly; 31. First drive component; 32. Second drive component; 4. Displacement sensor assembly; 41. First displacement sensor; 42. Second displacement sensor; 5. Doctor blade assembly; 6. Coating roller drive component; 7. Pressure roller drive component; 8. Coating roller. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] like Figure 1 As shown in this embodiment, a method for adjusting the height of the coating blade in a coating apparatus includes the following steps:

[0041] S1. Obtain the initial height values ​​at both ends of the slide assembly 2. x A 、x B ;

[0042] S2, Based on the target height value x and initial height value x A 、x B Determine the initial motion stroke values ​​a and b of the drive components 3 at both ends of the slide assembly 2;

[0043] S3, Based on the initial height value x A 、x B Determine the stroke compensation values ​​a1 and b1 of the drive components 3 at both ends of the slide assembly 2;

[0044] S4. The stroke compensation values ​​a1 and b1 are respectively compensated to the corresponding initial motion stroke values ​​a and b, so as to obtain the final motion stroke values ​​A and B of the drive components 3 at both ends of the slide assembly 2.

[0045] S5. Turn the drive assembly 3 on and off according to the final motion stroke values ​​A and B to adjust the height of both ends of the slide assembly 2.

[0046] The coating blade height adjustment method of the coating apparatus of the present invention compensates for the initial height values ​​of the two ends of the slide assembly 2 relative to the positioning component used to determine the blade height, and adjusts the height of the two ends of the slide assembly 2 according to the compensated height values. This solves the technical problem of over-adjustment at one end or under-adjustment at the other end. While leveling, the height of the slide assembly 2 can also be adjusted. Compared with setting a separate height adjustment device to adjust the height of the slide assembly 2, the device structure used in the coating blade height adjustment method of the present invention is simpler and the adjustment efficiency is higher.

[0047] like Figures 2 to 4 As shown, the coating apparatus of the present invention includes a frame 1, a slide assembly 2, a drive assembly 3, a displacement sensor assembly 4, a doctor blade assembly 5, a coating roller 8, and a controller. The slide assembly 2 and the coating roller 8 are mounted on the frame 1. The drive assembly 3 is used to drive the two ends of the slide assembly 2 to move up and down relative to the positioning assembly. The doctor blade assembly 5 is connected to the slide assembly 2 and is disposed near the coating roller 8. The doctor blade assembly 5 is used to scrape the coating film on the coating roller 8 to control the thickness of the coating film. The doctor blade assembly 5 moves up and down together with the slide assembly 2 when it moves up and down. The displacement sensor assembly 4 is used to detect the height values ​​of the two ends of the slide assembly 2 relative to the positioning assembly. The controller is wirelessly or wiredly connected to the drive assembly 3 and the displacement sensor assembly 4.

[0048] In this embodiment, the coating film is a pharmaceutical film. The thickness of the dry pharmaceutical film is between 40-500 μm, with a required error of ±3 μm. The corresponding thickness control accuracy of the wet pharmaceutical film is 3 μm, requiring extremely high positioning accuracy, making it prone to over-adjustment and under-adjustment. In the coating apparatus of this invention, the height changes of the two ends of the slide assembly 2 relative to the positioning assembly correspond to the height changes of the doctor blade assembly 5 relative to the coating roller 8. Adjusting the height of the two ends of the slide assembly 2 to the positioning assembly by the drive assembly 3 is equivalent to adjusting the height of the two ends of the doctor blade assembly 5 to the coating roller 8. Using the displacement sensor assembly 4 as feedback on the height position of the doctor blade assembly 5, the drive assembly 3 is controlled to move and position the slide assembly 2 to the designated position. Furthermore, the doctor blade assembly 5 can be individually adjusted on one side, achieving high-precision control of the position of the doctor blade assembly 5, with an accuracy within 3 μm, ensuring that the coating film thickness accuracy meets production requirements.

[0049] In this embodiment, the doctor blade assembly 5 is equipped with a coating head, and the coating head contains the drug film material. The drug film material flows out from the opening below the coating head and falls onto the release film on the coating roller 8. When the release film transports the drug film, it passes under the doctor blade assembly 5 and is scraped by the doctor blade assembly 5.

[0050] The drive assembly 3 includes a first drive member 31 and a second drive member 32 disposed opposite to each other at both ends of the slide assembly 2. The first drive member 31 is used to adjust the height of one end of the slide assembly 2 relative to the positioning component, and the second drive member 32 is used to adjust the height of the other end of the slide assembly 2 relative to the positioning component. In this embodiment, the drive assembly 3 is a stepper motor.

[0051] The displacement sensor assembly 4 includes a first displacement sensor 41 and a second displacement sensor 42 disposed opposite to each other at both ends of the slide assembly 2. The first displacement sensor 41 is used to detect and acquire the height of one end of the slide assembly 2 relative to the positioning component, and the second displacement sensor 42 is used to detect and acquire the height of the other end of the slide assembly 2 relative to the positioning component. In this invention, the displacement sensor assembly 4 detects the height of both ends of the slide assembly 2 relative to the positioning component. Compared with the technical solution that detects the height of the drive component 3 relative to the positioning component, this invention eliminates the influence of the movement of the drive component 3 on the position during position processing, resulting in more accurate position detection.

[0052] The applicant discovered that because two adjustment components drive the two ends of the slide assembly respectively, when leveling one end of the coating head at the micron level using the adjustment device, the other end experiences a rise or fall in position. Existing technology for adjusting the doctor blade, due to the influence of adjusting one end on the other, easily leads to over-adjustment or under-adjustment. Furthermore, adjusting the slide assembly typically involves separate actions for overall height adjustment and leveling, resulting in a long adjustment cycle, low efficiency, and impacting production. In addition, when using a dual-motor drive, the slight difference in movement between the two motors further exacerbates these problems. This invention effectively solves these problems, enabling simultaneous overall height adjustment and doctor blade leveling.

[0053] In step S2, the target height value is... x Compared with the initial height value x A 、x B Subtracting these values ​​yields the initial travel values ​​a and b at both ends of the slide assembly 2. In this embodiment, the target height value... x This is the preset theoretical height value of the slide assembly 2 relative to the positioning assembly.

[0054] In step S3, the steps for determining the travel compensation values ​​a1 and b1 are as follows: [Judgment / Determination] x A 、x B Size, when x A 、x B When they are equal, determine the travel compensation values ​​a1 and b1 according to formula (Ⅰ). x A > xB When, the travel compensation values ​​a1 and b1 are determined according to formulas (II) and (III), when x A < x B At that time, the travel compensation values ​​a1 and b1 are determined according to formulas (Ⅳ) and (Ⅴ);

[0055]

[0056] In the above formula, α and β are the pulse compensation coefficients of the drive components 3 at both ends of the slide assembly 2, and are values ​​greater than 0.

[0057] From the above formula, we can see that: when the initial height value... x A 、x B When they are equal, no travel compensation values ​​a1 and b1 are needed; when x A 、 x B When they are unequal, the travel compensation values ​​a1 and b1 can be positive or negative, depending on the initial height value. x A 、x B Negative compensation is applied to larger travel compensation values ​​for the initial height value. x A 、x B Positive compensation is applied to smaller travel compensation values.

[0058] like Figure 5 As shown, the controller is connected to the first displacement sensor 41 and the second displacement sensor 42 via a communication module, and the controller is connected to the first drive unit 31 and the second drive unit 32 via a pulse module.

[0059] In this embodiment, the travel compensation values ​​a1 and b1 are determined by the controller.

[0060] In this invention, the following conditions are met: 0.1≤α≤0.3, 0.1≤β≤0.3. The values ​​of α and β are empirical values, which are related to the length of the doctor blade assembly 5 and the properties of the coating adhesive. Generally speaking, the longer the doctor blade assembly 5, the larger α and β are.

[0061] In step S4, compensating the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively means adding the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively. In this invention, the controller compensates the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively.

[0062] In step S6, the final motion stroke values ​​A and B are converted into motor pulse commands with a fixed cycle. The drive component 3 is turned on and off according to the motor pulse commands. In this invention, the positioning signals of the final motion stroke values ​​A and B are converted into pulse signals by the controller, and the stroke position of the drive component 3 is precisely controlled by the pulse signals.

[0063] Before step S1, the following steps are included: A1, obtaining the thickness values ​​at both ends of the coated film; A2, determining whether the thickness values ​​at both ends of the coated film are equal; if so, proceeding to step A3, otherwise proceeding to step S1; A3, determining whether the thickness values ​​at both ends of the coated film are equal to the theoretical thickness value; if so, continuing coating, otherwise proceeding to step S1. In this invention, before each adjustment of the coating blade height, it is first determined whether the thickness values ​​at both ends of the coated film are equal; if they are not equal, height adjustment is required. If the thickness values ​​at both ends are equal, it is determined whether the thickness values ​​at both ends are the theoretical thickness value; if they are not equal, height adjustment is required.

[0064] In this invention, the thickness values ​​at both ends of the coating film are determined by the initial height values ​​of both ends of the slide assembly 2 relative to the positioning assembly. x A 、x B This is reflected in the thickness values ​​at both ends of the coated film. If the thickness values ​​at both ends are not equal, it means that the doctor blade assembly 5 has been tilted, and the initial height value will be affected. x A 、x B The heights are not equal, so the scraper assembly 5 (slide assembly 2) needs to be leveled, i.e., the initial height value needs to be adjusted. x A 、 x B This makes the slide assembly 2 parallel to the coating roller 8. If the thickness of the coated film is less than the theoretical thickness, the target height value will be... x Greater than the initial height value x A 、x B The doctor blade assembly 5 needs to be raised as a whole to increase the distance between the doctor blade assembly 5 and the coating roller 8. Height adjustment is required. If the coating film thickness is greater than the theoretical thickness, the target height value will be adjusted accordingly. x Less than the initial height value x A 、x B The doctor blade assembly 5 needs to be lowered as a whole to reduce the distance between it and the coating roller 8. Height adjustment is also necessary. Only when the coating film thickness equals the theoretical thickness does the coating process proceed normally, and no further adjustment is required. This invention achieves both leveling and overall height adjustment, resulting in higher efficiency and a more compact structure.

[0065] In this embodiment, the coating apparatus of the present invention further includes a thickness detection component (not shown in the figure) for detecting the thickness values ​​at both ends of the coating film. The thickness detection component is connected to the controller via wired or wireless means. The thickness detection component sends the detected thickness value to the controller, and the controller performs subsequent judgment and data processing steps.

[0066] In this embodiment, the coating apparatus further includes a coating roller drive 6 and a pressure roller drive 7. The coating roller drive 6 is mounted on the frame 1 to drive the coating roller 8 to rotate, and the pressure roller drive 7 is mounted on the frame 1 to drive the pressure roller (not shown in the figure). The pressure roller and the coating roller 8 are arranged side by side for conveying the release film. This is the prior art and will not be described in detail here.

[0067] The present invention also provides a coating blade height adjustment control system for a coating apparatus, comprising a microprocessor and a memory interconnected thereto, wherein the microprocessor is programmed or configured to execute the aforementioned coating blade height adjustment method for the coating apparatus.

[0068] The present invention also provides a computer-readable storage medium storing a computer program or instructions that are programmed or configured to execute the aforementioned coating blade height adjustment method of the coating apparatus via a processor.

[0069] The present invention also provides a computer program product, including a computer program or instructions, which are programmed or configured to execute the coating blade height adjustment method of the aforementioned coating apparatus via a processor.

[0070] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The present invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, produce implementations of the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1The computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the spirit and technical essence of the present invention. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall still fall within the protection scope of the technical solutions of the present invention.

Claims

1. A method for adjusting the height of a coating blade in a coating apparatus, characterized in that, Includes the following steps: S1. Obtain the initial height values ​​at both ends of the slide assembly (2). x A 、x B ; S2, Based on the target height value x and initial height value x A 、x B Determine the initial motion stroke values ​​a and b of the drive components (3) at both ends of the slide assembly (2); S3, Based on the initial height value x A 、x B Determine the stroke compensation values ​​a1 and b1 of the drive components (3) at both ends of the slide assembly (2); S4. The stroke compensation values ​​a1 and b1 are respectively compensated to the corresponding initial motion stroke values ​​a and b, so as to obtain the final motion stroke values ​​A and B of the drive components (3) at both ends of the slide assembly (2); S5. Turn the drive assembly (3) on and off according to the final motion stroke values ​​A and B to adjust the height of both ends of the slide assembly (2); In step S3, the steps for determining the travel compensation values ​​a1 and b1 are as follows: [Judgment / Determination] x A 、x B Size, when x A 、x B When they are equal, determine the travel compensation values ​​a1 and b1 according to formula (Ⅰ). x A > x B When, the travel compensation values ​​a1 and b1 are determined according to formulas (II) and (III), when x A < x B At that time, the travel compensation values ​​a1 and b1 are determined according to formulas (Ⅳ) and (Ⅴ); α and β are the pulse compensation coefficients of the drive components at both ends of the slide assembly, respectively.

2. The method for adjusting the height of the coating blade in the coating apparatus according to claim 1, characterized in that, In step S2, the target height value is... x Compared with the initial height value x A 、x B Subtracting the two values, we obtain the initial motion stroke values ​​a and b at both ends of the slide assembly (2).

3. The method for adjusting the height of the coating blade in the coating apparatus according to claim 1, characterized in that, It satisfies 0.1≤α≤0.3 and 0.1≤β≤0.

3.

4. The method for adjusting the height of the coating blade in the coating apparatus according to claim 2, characterized in that, In step S4, compensating the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively means adding the stroke compensation values ​​a1 and b1 to the corresponding initial motion stroke values ​​a and b respectively.

5. The method for adjusting the height of the coating blade in the coating apparatus according to claim 1, characterized in that, In step S6, the final motion stroke values ​​A and B are converted into motor pulse commands with a fixed cycle. The drive component (3) is a stepper motor, and the drive component (3) is turned on and off according to the motor pulse commands.

6. The method for adjusting the height of the coating blade in the coating apparatus according to claim 1, characterized in that, The following steps are included before step S1: A1. Obtain the thickness values ​​at both ends of the coated film; A2. Determine whether the thickness values ​​at both ends of the coated film are equal. If they are, proceed to step A3; otherwise, proceed to step S1. A3. Determine whether the thickness values ​​at both ends of the coated film are equal to the theoretical thickness value. If yes, continue coating; otherwise, proceed to step S1.

7. A coating blade height adjustment control system for a coating apparatus, comprising a microprocessor and a memory interconnected, characterized in that, The microprocessor is programmed or configured to perform a method for adjusting the height of the coating blade of the coating apparatus according to any one of claims 1 to 6.

8. A computer-readable storage medium storing a computer program or instructions, characterized in that, The computer program or instructions are programmed or configured to execute, via a processor, the method for adjusting the coating blade height of the coating apparatus according to any one of claims 1 to 6.

9. A computer program product, comprising a computer program or instructions, characterized in that, The computer program or instructions are programmed or configured to execute, via a processor, the method for adjusting the coating blade height of the coating apparatus according to any one of claims 1 to 6.

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